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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Jun. 30, 2011
Income Taxes [Abstract]   
Effective tax rate, continuing operations30.50%30.90% 
Unrecognized tax benefits that would affect the effective tax rate$ 65 $ 68
Accrued interest and penalties related to uncertain tax positions5 8
Interest and penalties included in income tax expense$ 1$ 2